Temperature regulating system



March 3, 1936. M OSNOS 2,032,433

I TEMPERATURE REG ULATING SYSTEM Filed Feb. 14, 1934 INVENTOR. MENDEL OSNOS ATTORNEY (i y (l w f'. I 'i y KP) eci-.einen Mar. s,

Mendel Osnos, Berlin, Germany,

assigner to 'Eclefunken Gesellschaft tur Drahtlose Tclegraphie m. b. E., Berlin, Germany,

Germany a corporation of? Application February 14, i934, sensi No, 1in-14e In Germany February 7, 1933 8 Claims. .(Cl. 236-1.)

'I'his invention relates to an improved temperature regulating system.

This application is an improvement on my copending applications Serial No. 539,443 led Jan. 28, 1932 and Serial No. 589,446 filed Jan. 28, 1932, and is concerned with a further development oi and improvements upon the temperature regulating system disclosed in the patent applications mentioned above, in which the Walls o the vessel 10 containing the liquid, at the levels oi the liquid most important for the thermal action are made as heat insulating as feasible. In the case of the application, Serial No. 589,443, a vessel having a uniform cross-section throughout, it is necessary to take care so that the flow of vheat from the top in downward direction should as ar as feasible be kept away from the lateral walls. Hence, the latter should be made of heat insulatiomand this is attainable by well known ways and means,

for instance, by making the lateral walls with vacuous spaces or lling the said spaces with fibrous 'materials which are poor conductors of heat. The bottom of the vessel should preferably be made of a conductive or metallic material. In the other application, Serial No. 589,446, the temperature regulating system comprises a liq-s uidmedium which presents dissimilar tempera tures at different points so that the body ,whose temperature is the desired temperature by locating the body in a floating member which is retained within the lportion of the liquid medium within the desired temperature zone.

Tests have demonstrated that even with the best of insulation, for instance, when making the vessel in the form oi a double-Walled (jackl eted) glass cylinder with the jacket space being metallized and evacuated, heat will always escape' 40 to the outside with the result that the desired fall of temperature of the liquid fron the top in downward direction and which should be as uniform (rectilinear) as possible is made impossible. This is liable to have the consequence'that the 45' major part of the heat escapes already from the upper layers (strata) oi the liquid to the. ambient or outside so that the lower strata of v the liquid remain quite cold.

The invention has the objectl to obviate this 5o 'drawback and the same consists in that good heat conductors, such as metal strips or metal cylinders consisting of copper. brass, aluminum, or

n the like are placed in' a position parallel to the inside wall of the heat-insulating layer, with .a view to insure a more uniform or practically rec temperature to be stabilized is brought in the particular position within the medium that has tilinear iall of temperature. These metallic parts or cylinders constitute a very effective heat distribution member which provides uniform distribution of the heat from the iioating member or body to be maintained at a constant temperature. Without the use oi the metallic cylinder, the heat would leal; directly away across the walls or" the vessel and would not be uniformly distributed from the top to the bottom of the cylinder.

Two exempliiied embodiments are illustrated in the drawing, in whic Fig. l. shows a cross section of regulating system. Fig. 2 shows a cross section of a modication oi the improved temperature regulating system.

Referring now to Fig. l, the constituentparts are denoted by i which is a', substantially heavythe improved walled metallic cylinder, for instance, made from aluminum, etc. The substantially heavy wall of the cylinder-tends to stabilize the temperature so that it will not be subjected to the response oi frequent changes in temperature. 2 is a double-walled (jacketed) evacuated and optionally polished or metallized cylinder of glass, s the metallic bottoin4 the liquid, 5 a heater which is connected to a source of current, E is a oater inside which the article or object which is to be kept at a constant or stabilizedA temperature is is made from the article to be maintained a constant temperature by the leads 8A which may be of flexible insulated wire.

In the embodiment shown in Fig. 2 the heat insulating outside shell consists of a mass such as rock wool ber or the like being a poor heat conductor and enveloped by a cylinder consisting of cardboard, glass, or the like indicated at 1.

A further improvement would be to enlarge the contour of the metallic base `il by providing it with extensionsor ribs in order that the exposed surtace area is increased so that its temperature may be as far as feasible equal to .that of the ambient.

I claim:

l. A temperature regulating system comprising a container for a device to be maintained at sub-- stantially a desired uniform temperature, a heat insulating layer surrounding said container, a heating element located near the top of said container, a liquid .within said container andsurrounding saidheating element, a metallic cylinder placed parallel to the inside wall of said container thereby producing a uniform temperature gradient vertically of said liquid in said container, a nesting member within container,

copper, brass,

included. Electrical connection the device to be maintained at constant temperature locatedv within said floating member, the

floating member being arranged to rise andfall with temperature variations in said liquid so as to float in a region of desired uniform temperature and a metallic base extending beyond the side wall of said cylinder.

2. A temperature regulating system comprising a container for a device to be maintained at substantially a desired uniform'temperature, a heat insulating layer surrounding said container, a heating element located near the top of said container, a, liquid rounding said heating element, a brass cylinder placed parallel to the inside wall of said container thereby producing a uniform temperature gradient vertically of said liquid in said container, a floating member within said container, the device to be maintained at constant within said floating member, the floating member being arranged to rise and fall with temperature variations in said liquid so as to float in a region of desired temperature, and a brass base extending beyond the side wall of said cylinder.

3. A temperature regulating system comprising a container for a device to be maintained at substantially a desired uniform temperature, a heat insulating layer surrounding said container, a heating element located near the top of said container, a liquid within said container and suf;- rounding said heating element, a copper cylinder placed parallel to the inside Wall of said container thereby producing a uniform temperature gradient vertically of said liquid in said container, a floating member within said container, the device to be maintained at constant temprature located Within said floating member, tire floating member being arranged to rise and fall witn temperature variations in said liquid so as to ioat in a region of desired temperature, and a copper base extending beyond the side wall of said cylinder.

4. A temperature regulating system comprising a double walled insulating container for a device to be maintained at substantially a desired uniform temperature, a heat insulating layer within said double walled insulating container, a heating element located near the top of said container, a

liquid within said container and surrounding said' heating element, a metallic cylinder placed in parallel relationship with the inside wall of said container thereby producing a uniform temperature gradient vertically of said liquid in said coning element tainer, a floating member within said container, the device to be maintained at constant temperature located within said floating member, the oating member being arranged to rise and fall with temperature variations in said liquid so as to float in a region of desired temperature.

5.` A temperature regulating system comprising a device to be maintained at substantially a uniform temperature, a heat insulating medium surrounding said container, a. heatlocated near the top of said conwithin said container and surture located within said floating member, the

floating member being arranged to rise and fall with temperature variations in said liquid so as to float in a region of desired temperature, and a metallic base extending beyond the side Wall of the outermost metallic member.

6. A temperature regulating system comprising a container for a device to be maintained at substantially a uniform temperature, a heat insulating medium surrounding said container, a heating element located near the top of said container, a liquid within said container and surrounding said heating element, parallel to the wali of said container thereby produclng a uniform temperature gradient vertically of said liquid in said container, a floating member within said container, the device to be maintained at constant temperature located within said Iioating member. the floating member being arranged to rise and fall with temperature variations in seid .liquirfv so as te float in a region of desired temperature.

7. A temperature regulating system comprising a container for a device to be maintained at substantially a desired uniform temperature, a heat insulating layer surrounding said container, a heating element located near the top of said container, a liquid within said ronnding said heating element, a metallic cylinder placed parallel to the inside wall of said container thereby producing a er, a iloating member within said container, the device to be maintained at constant temperature located within said floating member, the floating member being arranged to rise and fall with temperature variations ln said liquid so as to float in a region of desired uniform temperature.

8. A temperature regulating system comprising a container for adevice to be maintained at substantially a desired uniform temperature, a heat insulating layer of rock Wool fiber surrounding'y said container, a heating element located near the providing a uniform temperaa, metallic member piaced container and sur- :i

uniform temperature l gradient vertically' of said liquid in said contain'- l 40 

